Stackable storage unit or similar article



FIG. 1 is a perspective view of a stackable storage unit or similararticle showing my new design, the opposite side being a mirror imagethereof;

FIG. 2 is a front elevational view thereof, the rear being flat andunornamented; and,

FIG. 3 is a bottom plan view thereof.

The ornamental design for a stackable storage unit or similar article,substantially as shown and described.